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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 1 |
| 9 | 5 |
| 10 | 1562 |
| 11 | 21617036 |
| 12 | 733460349818 |
| 13 | 42703733735064572 |
| 14 | 4073409466378991404239 |
| 15 | 613990076321940092226829047 |
| 16 | 141518698937232822678583027258225 |
[0,0,0,0,0,0,0,0,1,5,1562,21617036,733460349818, 42703733735064572,4073409466378991404239, 613990076321940092226829047, 141518698937232822678583027258225] |